Grabbing mechanism of laser sintering part wax permeation post-processing device

Abstract

The utility model relates to the technical field of 3D printing post-processing, and discloses a grabbing mechanism of a laser sintering part wax permeation post-processing device, which comprises a manipulator, a lifting assembly and a moving assembly, the manipulator is arranged on the lifting assembly, and the lifting assembly comprises a lifting motor, a lifting coupler, a lifting lead screw, a lifting sliding block and a lifting guide rail. The lifting motor is fixed above the lifting coupler and connected with the lifting lead screw, the lifting lead screw is in threaded connection with the lifting sliding block, the lifting sliding block is movably connected with the lifting guide rail, and the two sides of the lifting assembly are fixedly connected with the connecting frame. According to the wax permeation treatment device, grabbing and moving of the mechanical arm can be controlled, and the wax permeation treatment effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing post-processing technology, specifically to a gripping mechanism of a laser sintered part wax infiltration post-processing device. Background Technology

[0002] 3D printing technology is a novel intelligent manufacturing technology that originated in the 1980s. This technology uses software to segment a 3D model into discrete thin layers, and then uses computer control to layer-by-layer material to form a 3D solid. Unlike traditional subtractive manufacturing methods, additive manufacturing does not require molds; it can produce complex-shaped parts by stacking materials layer by layer. With technological advancements, 3D printing has gradually expanded from rapid prototyping to actual production, becoming an important tool in modern manufacturing. Selective Laser Sintering (SLS) is a typical powder bed additive manufacturing technology that uses a high-power laser beam to locally heat and sinter metal, plastic, or ceramic powders, building the desired part layer by layer. The key to SLS is using a computer to control the laser beam to scan the powder surface for each layer. Compared to other additive manufacturing technologies, SLS can precisely sinter powders of different materials at high temperatures, offering higher precision and stronger forming capabilities, making it particularly suitable for producing parts with complex geometries.

[0003] Non-metallic sintered parts formed by SLS can undergo post-wax infiltration treatment using a wax infiltration device. This process fills the internal voids and forms a uniform wax layer on the surface, ensuring the precision of the castings produced by investment casting. The advantage of this technology is its ability to quickly manufacture complex core molds required for investment casting. However, it requires post-wax infiltration treatment, and traditional wax infiltration devices face several challenges during operation. For example, uneven wax wetting of the sintered parts and slow speed result in incomplete filling of internal voids and uneven wax layer thickness, affecting casting quality. Furthermore, the secondary contact with the sintered parts during wax infiltration reduces forming accuracy.

[0004] In summary, existing post-wax diffusion treatment methods for laser-sintered parts have the following shortcomings: they involve a lot of manual intervention and are labor-intensive; the efficiency of manual work is low, which increases the time for post-wax diffusion treatment and reduces production efficiency; and the uniformity of wax diffusion cannot be controlled, resulting in poor wax diffusion effect of parts. Utility Model Content

[0005] The purpose of this invention is to provide a gripping mechanism for a post-wax infiltration treatment device for laser-sintered parts, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gripping mechanism for a laser sintered part wax infiltration post-treatment device, comprising a robotic arm, a lifting assembly, and a moving assembly. The robotic arm is positioned below the lifting assembly, and its top end is fixedly connected to the bottom end of the lifting assembly. The lifting assembly includes a lifting motor, a lifting coupling, a lifting screw, a lifting slider, and a lifting guide rail. The lifting motor is fixedly installed above the lifting coupling, which is fixedly installed at the top of the main frame. The output end of the lifting motor passes through the lifting coupling and is fixedly connected to the lifting screw. The lifting screw is threadedly connected to the lifting slider, which slides in cooperation with the lifting guide rail. The moving slider of the moving assembly is positioned on both sides of the connecting frame, and both sides of the main frame of the lifting assembly are fixedly connected to the two sides of the moving slider of the moving assembly.

[0007] Preferably, the moving component includes a moving motor, a moving coupling, a moving lead screw, a moving sleeve, and a moving guide rail. The moving motor is located above the main frame. The output shaft of the moving motor is fixedly connected to one end of the moving lead screw through the moving coupling. The moving lead screw is threadedly connected to the moving sleeve.

[0008] Preferably, the middle part of the connecting frame is fixedly connected to the movable sleeve, and the movable guide rail is fixedly installed on the surface of the connecting frame. The movable slider slides in cooperation with the movable guide rail, and the movable motor and the movable lead screw are fixedly installed to the external structure respectively.

[0009] Preferably, the robotic arm includes a robotic arm motor, a robotic arm coupling, a robotic arm lead screw, a robotic gripper, a robotic handpiece holder, a robotic handpiece holder, and a robotic glove sleeve.

[0010] Preferably, the robotic arm motor is fixedly installed on the robotic arm frame, and the output end of the robotic arm motor is fixedly connected to one end of the robotic arm screw through the robotic arm coupling. The robotic arm screw is threadedly connected to the robotic arm sleeve, and the top end of the robotic arm frame is fixedly connected to the bottom end of the lifting slider.

[0011] Preferably, the bottom end of the mechanical phone holder is hinged with a number of mechanical claws, and the middle part of each mechanical claw is hinged to one end of each mechanical arm connecting plate, and the other end of each mechanical arm connecting plate is hinged to the bottom end of the mechanical glove sleeve.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. This utility model liberates labor, reduces manual intervention processes, lowers the intensity of manual labor, improves work efficiency, and obtains workpieces with good wax infiltration effect;

[0014] 2. This novel invention can optimize the uniformity of the wax infiltration process and improve the effect of the wax infiltration process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the gripping device structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the moving component structure of the gripping device of this utility model;

[0017] Figure 3 This is a schematic diagram of the robotic arm of this utility model;

[0018] Figure 4 This is a schematic diagram of the wax infiltration disc of this utility model;

[0019] Figure 5 This is a schematic diagram of the moving structure of this utility model;

[0020] Figure: 1.1 Lifting motor, 1.2 Lifting coupling, 1.3 Lifting lead screw, 1.4 Lifting slider, 1.5 Lifting guide rail, 1.6 Robotic arm, 1.7 Moving motor, 1.8 Moving coupling, 1.9 Moving lead screw, 1.10 Moving sleeve, 1.10 Moving slider, 1.12 Moving guide rail, 1.13 Connecting frame, 1.6.1 Robotic arm motor, 1.6.2 Robotic arm coupling, 1.6.3 Robotic arm lead screw, 1.6.4 Robotic gripper, 1.6.5 Robotic arm connecting plate, 1.6.6 Robotic arm holder, 1.6.7 Robotic arm sleeve, 1 Gripping mechanism, 2 Main frame, 3 Wax infiltration tray, 4 Working platform, 5 Control panel, 6 Wax infiltration box. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] Please see Figures 1-5The figure shows a gripping mechanism for a laser-sintered part wax infiltration post-processing device, including a robotic arm 1.6, a lifting assembly, and a moving assembly. The robotic arm 1.6 is located below the lifting assembly, and its top end is fixedly connected to the bottom end of the lifting assembly. The lifting assembly includes a lifting motor 1.1, a lifting coupling 1.2, a lifting screw 1.3, a lifting slider 1.4, and a lifting guide rail 1.5. The lifting motor 1.1 is fixedly installed above the lifting coupling 1.2, which is fixedly installed at the top of the main frame. The output end of the lifting motor 1.1 passes through the lifting coupling 1.2 and is fixedly connected to the lifting screw 1.3. The lifting screw 1.3 is threadedly connected to the outer side of the lifting screw 1.3, and the lifting slider 1.4 slides in cooperation with the lifting guide rail 1.5. The moving slider 1.11 of the moving assembly is located on both sides of the connecting frame 1.13, and the two sides of the main frame of the lifting assembly are fixedly connected to the two sides of the moving slider 1.11 of the moving assembly.

[0024] In this embodiment, the moving component includes a moving motor 1.7, a moving coupling 1.8, a moving lead screw 1.9, a moving sleeve 1.10, and a moving guide rail 1.12. The moving motor 1.7 is located above the main frame 2. The output shaft of the moving motor 1.7 is fixedly connected to one end of the moving lead screw 1.9 through the moving coupling 1.8. The moving lead screw 1.9 is threadedly connected to the moving sleeve 1.10. The middle part of the connecting frame 1.13 is fixedly connected to the moving sleeve 1.10, and the moving guide rail 1.12 is fixedly installed on the surface of the connecting frame 1.13. The moving slider 1.11 is slidably engaged with the moving guide rail 1.12. The moving motor 1.7 and the moving lead screw 1.9 are respectively fixedly installed to the external structure.

[0025] Furthermore, the robotic arm 1.6 includes a robotic arm motor 1.6.1, a robotic arm coupling 1.6.2, a robotic arm lead screw 1.6.3, a robotic gripper 1.6.4, a robotic arm connecting plate 1.6.5, a robotic arm frame 1.6.6, and a robotic glove sleeve 1.6.7. The robotic arm motor 1.6.1 is fixedly mounted on the robotic arm frame 1.6.6, and the output end of the robotic arm motor 1.6.1 is fixedly connected to one end of the robotic arm lead screw 1.6.3 through the robotic arm coupling 1.6.2. The robotic arm lead screw 1.6.3 is threadedly connected to the robotic glove sleeve 1.6.7. The top end of the robotic arm frame 1.6.6 is fixedly connected to the bottom end of the lifting slider 1.4, and the robotic gripper 1.6.4 is fixedly connected to the robotic glove sleeve 1.6.7 through the robotic arm connecting plate 1.6.5.

[0026] The lifting assembly includes: a lifting motor 1.1, a lifting coupling 1.2, a lifting screw 1.3, a lifting slider 1.4, and a lifting guide rail 1.5. The lifting motor 1.1 is fixed above the lifting coupling 1.2. The lifting motor 1.1 is connected to the lifting screw 1.3. The lifting screw 1.3 is threadedly connected to the lifting slider 1.4. The lifting slider 1.4 is movably connected to the lifting guide rail 1.5. Both sides of the lifting assembly are fixedly connected to the connecting frame 1.13. The movable slider 1.11 of the movable assembly is fixed on the connecting frame 1.13. The lifting motor 1.1 drives the lifting slider 1.4 to move the robot arm 1.6 up and down on the lifting guide rail 1.5.

[0027] The moving assembly includes: a moving motor 1.7, a moving coupling 1.8, a moving lead screw 1.9, a moving sleeve 1.10, and a moving guide rail 1.12. The moving motor 1.7 is located above the main frame 2. The output shaft of the moving motor 1.7 is connected to the moving coupling 1.8. The moving lead screw 1.9 is threadedly connected to the moving sleeve 1.10. The connecting frame 1.13 fixes the moving sleeve 1.10 and the moving slider 1.11. The moving slider 1.11 is movably connected to the moving guide rail 1.12. The moving motor 1.7 drives the moving slider 1.11 to move the connecting frame 1.13 horizontally on the moving guide rail 1.12.

[0028] The robotic arm 1.6 includes a robotic arm motor 1.6.1, a robotic arm coupling 1.6.2, a robotic arm lead screw 1.6.3, a robotic gripper 1.6.4, a robotic arm connecting plate 1.6.5, a robotic arm frame 1.6.6, and a robotic glove sleeve 1.6.7. The robotic arm motor 1.6.1 is fixedly mounted on the robotic arm frame 1.6.6, and the output end of the robotic arm motor 1.6.1 is fixedly connected to one end of the robotic arm lead screw 1.6.3 through the robotic arm coupling 1.6.2. The robotic arm lead screw 1.6.3 is threadedly connected to the robotic glove sleeve 1.6.7. The top end of the robotic arm frame 1.6.6 is fixedly connected to the bottom end of the lifting slider 1.4. Several robotic grippers 1.6.4 are hinged to the bottom end of the robotic arm frame 1.6.6, and each robotic gripper 1.6.4 has a portion of its middle part... Each robotic arm connecting plate 1.6.5 is hinged at one end, and the other end of each robotic arm connecting plate 1.6.5 is hinged to the bottom end of the robotic glove 1.6.7. The robotic arm motor 1.6.1 is controlled so that its output end drives the robotic arm screw 1.6.3 to rotate through the robotic arm coupling 1.6.2. Thus, through the threaded engagement between the robotic arm screw 1.6.3 and the robotic glove 1.6.7, the robotic glove 1.6.7 drives the multiple robotic arm connecting plates 1.6.5 to move. This allows the multiple robotic claws 1.6.4 hinged to the robotic arm connecting plates 1.6.5 to open and close under the push and pull of the robotic arm connecting plates 1.6.5, so that each robotic claw 1.6.4 can squeeze or release one end of the workpiece, achieving the process of clamping the workpiece.

[0029] This utility model is installed in a wax infiltration post-processing device for laser sintered parts. The wax infiltration post-processing device for laser sintered parts includes a gripping mechanism 1, a main frame 2, a wax infiltration tray 3, a working platform 4, a control board 5, a wax infiltration box 6, and a control system. The control board 5 is installed on the side of the mechanism and is connected to the robot arm 1.6 and the wax infiltration box 6 via cables. The wax infiltration box 6 is located in the main frame directly below the moving component. After completing the wax infiltration, the robot arm 1.6 accurately moves the workpiece to the wax suction paper above the working platform 4.

[0030] The specific work process is as follows:

[0031] The first step is to securely place the workpiece in a specially designed wax-soaking tray. The size of the tray can be selected according to the size of the workpiece. The surface of the tray is specially treated to increase its roughness, thereby enhancing the friction between the workpiece and the tray and preventing slippage. The robotic arm grips the tray, and then the heating wire is activated to gradually raise the temperature of the wax liquid in the wax-soaking tank. The wax-soaking lifting component is activated to slowly lower the workpiece into the wax liquid at a precisely controlled speed. After soaking for a certain period of time, the moving component is activated to move the workpiece smoothly and horizontally. After all the air bubbles are expelled, the lifting component moves the robotic arm above the wax-soaking tank, picks up the workpiece that has been wax-soaked, and lifts it to a certain height. The robotic arm pauses briefly to allow the wax liquid on the workpiece surface that has not completely solidified to drip naturally. Then, the robotic arm smoothly places the workpiece on the work platform, and then removes the workpiece from the wax-soaking tray and places it on the wax-soaking paper on the work platform, marking the end of the wax-soaking process.

[0032] This invention not only improves the efficiency, effect, and automation level of wax infiltration, but also reduces the workload of workers, thereby minimizing the various drawbacks of manual wax infiltration.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grabbing mechanism of a laser sintering part wax infiltration post-processing device, comprising a manipulator (1.6), a lifting assembly and a moving assembly, characterized in that: the manipulator (1.6) is arranged below the lifting assembly, and the top end of the manipulator (1.6) is fixedly connected with the bottom end of the lifting assembly; the lifting assembly comprises a lifting motor (1.1), a lifting coupling (1.2), a lifting screw (1.3), a lifting slider (1.4) and a lifting guide rail (1.5) ; the lifting motor (1.1) is fixedly installed above the lifting coupling (1.2), the lifting coupling (1.2) is fixedly installed at the top end of the main body frame, the output end of the lifting motor (1.1) passes through the lifting coupling (1.2) and is fixedly connected with the lifting screw (1.3), the lifting screw (1.3) is threadedly connected with the lifting slider (1.4) on the outside, the lifting slider (1.4) is in sliding fit with the lifting guide rail (1.5), and the moving slider (1.11) of the moving assembly is arranged on both sides of the connecting frame (1.13), and the main body frame of the lifting assembly is fixedly connected with both sides of the moving slider (1.11) of the moving assembly. The moving assembly comprises a moving motor (1.7), a moving coupling (1.8), a moving screw (1.9), a moving sleeve (1.10) and a moving guide rail (1.12), the moving motor (1.7) is arranged above the main frame (2), the output shaft end of the moving motor (1.7) is fixedly connected with one end of the moving screw (1.9) through the moving coupling (1.8), and the moving screw (1.9) is threadedly connected with the moving sleeve (1.10).

2. The grabbing mechanism of a laser sintered part post-waxing treatment device according to claim 1, characterized in that: The middle part of the connecting frame (1.13) is fixedly connected with the moving sleeve (1.10), the moving guide rail (1.12) is fixedly installed on the surface of the connecting frame (1.13), the moving slider (1.11) is in sliding fit with the moving guide rail (1.12), and the moving motor (1.7) and the moving screw (1.9) are respectively fixedly installed with external structures.

3. The grabbing mechanism of a laser sintered part post-waxing treatment device according to claim 2, characterized in that: The manipulator (1.6) comprises a manipulator motor (1.6.1), a manipulator coupling (1.6.2), a manipulator screw (1.6.3), a mechanical claw (1.6.4), a manipulator connecting plate (1.6.5), a manipulator bracket (1.6.6) and a manipulator sleeve (1.6.7).

4. The grabbing mechanism of a laser sintered part post processing device according to claim 3, wherein: The manipulator motor (1.6.1) is fixedly installed on the manipulator bracket (1.6.6), the output end of the manipulator motor (1.6.1) is fixedly connected with one end of the manipulator screw (1.6.3) through the manipulator coupling (1.6.2), the manipulator screw (1.6.3) is threadedly connected with the manipulator sleeve (1.6.7), and the top end of the manipulator bracket (1.6.6) is fixedly connected with the bottom end of the lifting slider (1.4).

5. The grabbing mechanism of a laser sintered part post-waxing treatment device according to claim 4, characterized in that: The bottom end of the manipulator bracket (1.6.6) is hingedly connected with a plurality of mechanical claws (1.6.4), the middle part of each mechanical claw (1.6.4) is hingedly connected with one end of each manipulator connecting plate (1.6.5), and the other end of each manipulator connecting plate (1.6.5) is hingedly connected with the bottom end of the manipulator sleeve (1.6.7).

6. The grabbing mechanism of a laser sintered part post-waxing treatment device according to claim 5, characterized in that: ​

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